Pump operating mechanism



2 Sheets-Sheet l 2 I 17- A. C. NELSON Ha/@Zaan d www PUMP OPERATING MECHANISM Filed Feb. 2, 1951 Oct. 17, 1933` Oct. 17, 1933. A. c. NELSON PUMP OPERATING MECHANISM Filed Feb. 28, 1951 2 Sheets-Sheet 2 `r .SL

7 mz 5 M 9 7 Z f 5 il n w A N f, 7. ,AMW M ,M .r m M ==E=== M w d w m .a $1 ,l m m 7 3 A .9 7 A' v 4 @L 4, o Z 4 .lllllnal n Patented Oct. I7, 1931?` `1,931295 p PUMP OPERATING MECHANISMI y Arthur C. Nelsmt,l Alert'andriafvMimi-v n Application February 2s", 19:91.l Serial No. 519,22;

v11 claims. v (el. nlei-,14) f l Walkingbeam support is forked at2`6` and th V Thisinvention relates to pumps and more particularly to the operating mechanism of those.. pumps in which the piston is fixed and a lifting pipe reciprocates with relation to the piston, 4such :pumps being shown in my Patent No. 1,802,827,

granted on April 28, 1931 and in a pending application iiled of even date therewith, Serial No.V

519,220. Y y The object of the present invention is `to `provide a power operated mechanism for operating 4pumps of this character which is very simple, which is eflfective and in which the weight of the string of tubing which constitutes the liftpipe is counterbalanced by a counterweight operating within guides.

A further object is to provide means Figure 2 is a section on the line 2 2 of Figure 1;l

Figure 3 is a section on the line 3-3 of Figure '1;

Figurey 4 is a section on the line 4-4 of Figure 5 Figure 5 is a section on the line 5-.5 of Figure 1.'

Referring to these drawings, indicates a pit having a bedding 11 of concrete therein and 12 indicates the sills of a frame. Extending upward from those portions of the sills which extend across the pit 10 are the uprights 13 and extending.

upward from the forward ends of `thesills are the uprights 14. As illustrated in Figure 4, the sills support longitudinal membersl 15 lupon which the bearings for the crank shaft 16 are disposed, this crank shaft having the crank 1'7. Mounted upon this crank shaft'is a relatively large gear wheel 18 meshing with a pinion 19 of `a power shaft 20 Uwhich is mounted in suitable bearings upon the members 15. This power shaft isshown as carrying upon it a band wheel 21 whereby the power may be applied to the shaft r and thus transmitted to the shaft 16.

with bearings 23 for a shaft 24 mounted in bearings 25 on these sills 12. AThe upperV end-of the for lubri-l cating the driving mechanism and operating ,saidv terweight operates within the'pit 1,0. i The coun- Wallring beam 27 `has, .awdownwardly extending,` lug 2 8 inserted in the fork 26 and pivotally en-f vgaged therewith by the pivotpin 29..v This walking beam may be of any desired shape. It is pref.- so

erably provided, however, on its under face with two lugs 30V and 31 whereby it may be pivotally connected to a connecting rod. 32, see Figure 1, which in turn is engaged with the crank 1'?.Y the walking beams arereciprocated.

The connecting rod 32 may .be connected either with the ears 30 or 31 asdesired. Theprear end of the walking beam asshownf in Figure 2, is Y formed with a lug 33 engaged with the lforked Y upper end of a linkr34r. This link in `turn at `its lower end is pivotally connected to ears 35 bolted or otherwise attached to the counterweight'. This counterweight is preferably formed in two sections held together by the bolts 37. The counterweight has laterallyv projecting. ears 38 traveling upon vertical guiderods 519.y The lower ends off-these rods are embedded in 4the concrete 11 while the upper ends of the rods extend throughy a cross bar 40 attached by screws or otherwise to the'uprights 13. It will thus be seen that the counterweight is guided in a rectilinear path as the walking beam moves up or clown.v There fis thus no swinging action to the counterbalanced weight which would be the case were the weight not guided.

l The opposite end of the walking beam, as shown in Figure 3, kis pivotally .connected vto a cross head 41, the cross head having-upwardly extending ears 42 supporting the pivot pin 43 which extends through the `forward end of the walking beam. The cross head .41 is guided by.

the vertical guide. rods 44, vrThe lower ends of Y these -rods are mounted in a ,cross brace 49 flanges at its ends anduattached by screws 'p or otherwise to the uprights Manel the upperfends of the guide rods 44Lare engaged with a cross` piece 50 flanged andy supported 0!) the upper ends, of theuprights 14-byf means` of `screws or boltsy passing into these-uprights. The pumpbody Vor 10Q discharge chamber is designated 51. A stufiing box 52 having the usual gland is mounted at the upper `end o f this chamber and' a stuffing box 53` is provided at vthe lower, end of the chamber..

y The chamber is provided with a .spout 54 seen 105) Pivotally supported upon the sills 12, as shown in Figure 4, is a walking beam support 22, the lower ends of which are forked and are formed in Figure 1,

Operating through the .stuifing box 52 is a con-f necting rod 55 having screw-,threadedaengagement atV its upper end with the cross vh ead41.- The lower endof this rod 55.has screwthreaded engagement with ajcoupling 56 and this in turn has screw-threaded engagement with a vertically reciprocating lift tube 57 which passes through the gland 53.

As shown in Figure 3, the lift pipe 53 carries at its lower end a cylinder 58. Having telescopic engagement with this cylinder is a stationary piston 59 indicated in detail, this mechanism being fully shown, ydescribed Vand claimed in my pending application for patent of even date herewith, Serial No. 519,220. The piston 59 it may be explained has an anchoring means thereon whereby the piston is engaged with the lining of the well and is held from any vertical movet ment and as the lift pipe 57 reciprocates, water will be pumped upward through the lift pipeY the gear wheels 18 and 19Vv will run' in oil and so that the bearing for the post or walking beam support V22. will also be lubricated by this oil. Braces 62 and 63 extend upward from this tank to the upper endsA of the uprights 13 and 14.

- rExtending'entirely over this pumping unit and entirely Venclosing it is an outercasing 64 shown most clearly in Figures 1, 2 and 3 which may be supported in any suitable manner, as for in-4 stance, by being bolted as shown in Figure 1 at its forward end to flanges 65 and at its rear end by being bolted to the ends of the sills 12.

' mechanism. l t whereby access may be had to the interior of the This `casing entirely encloses the -operating It may, ofcourse, lhave means casing. As a matter of fact, however, the mechanism is so simple vvand so carefully lubricated that there is no necessity of access being had to the interior vof .thelcasing under ordinary circumstances.

YThe vertical members 13 and 14 are shown as connected by-longitudinally extending braces 66.'

Disposed above the outer casing are lubricant holding tanks 67, 68 and 69. downwardly discharging spout 70 whichextends throughthe casing and discharges directly upon the pivotal connection ofthe walking beam with the cross head as shown in Figure 3. The tank 369, has a spout 71 discharging directly down-` ward on to the pivotal connection of the rod 34 with the cross head.

"Mounted upon the walking beam is a lubricant containing trough 72 which oscillates with the Walking beam and the spout of the tank 69 dising member 224 as shown best in Figure 4 where the pipe'73 is shown as extending into and through the walking beam. The pipe 74 extends downward and into lthe walking beam in the same manner as the pipe 73, but discharges upon the pivotal connectionbetween the connecting- ,connecting rod 32. This pipe, Vunder ordinary` ""circumstances, of course, is stopped unlessV the 'I'he tank 67 has a connecting rod 32 is connected to the ears 31. The surface oil, of course, will drip down into the tank 61. As the walking beam oscillates, the oil in the trough 72 will surge backward and forward so that all thepipes 73, 74 and 75 are supplied with oil.

The main object of the casing 64 is, of course to protect the mechanism from dust and dirt and to keep out foreign matter from the oil tank. The bottom` edge of the casing 64 is secured to the frame by machine screws at different points. At the pumping end of the machine, this casing is cut out where it nts around the pump barrel 51 or body of the pump, the upper edge of this cut-out portion resting on the anges at the upper edge of this body as shown most clearly in Figure 1. The casing, of course, may have any convenient opening in the detachable cover for the purpose of inspection, supplying lubricant oil to the tank as it may be needed. From Figure 4 it will be seen that the sills 12, theV posts 14,v

the supporting members 15 and the bottom and:V f

front wall of the lubricant containing tank are cast in one piece or these parts may be welded together. Then, as shown mostclearly in Figure 5, the sidewalls 61a and 61h of the tank are fastened by screws or otherwise to thefuprights `144 and at their rear ends arejoined by a rear wall 61e. The side walls 61a are so formed as to accommodate the vgears 18 and 19. Therefore, the bottom sills and the 'superposed `sills 15and the posts 14 with the forward and rear end walls are cast and formed at one time and afterwards machined as to the bearings for the crank shaftand pinion shaft and the surfaces for the side wall of the gear case61a and the side plate 61h, No wood is used whatever. The'bottom 61d of' the oil tank is also cast integral with the sills 12 and with the front and rear plates or walls of the tank. Preferably also the rear post 14 will be cast as an integral part of the sills 12. This construction provides a very solid base and sup portl for the pumping mechanism and causesthe tank to act to brace the two sills against any movement toward or .fr0m` each other and also actsrto brace the uprights 14. K-

It will thus be seen that the oil tank attains two objects, that of holding oil for the gears andbearings and of bracing the structure.

This'is important for the reason that this part of the tank serves thus a two-fold purpose. It not only contains oil, but it acts as ay brace between the elements of the frame.l The bearings, of course, will be lubricated by keeping the oil in vthistank at a level such that these parts are` partly or entirely submerged in oil. jIt will be seenthat by reason of thev fact that' the weight of the lift pipe is fullyA balanced 'b'y the counterweight 31, and the parts are 'thus evenly balanced, that the engine will drive this pump with a minimum of power, the only power. needed being suicient to raise the weight ofV the water that is contained within the lift pipe," and, of course, to overcome friction. AllV theA parts are carefully housed, protected and lubri-f cated; It will be seen that the mechanism is very simple and yet effective.

I claimzj l.'In a mechanism of 'the character described,` a hollow body, vertical posts on each side of the hollow body, braces extending across said,posts, one of said braces being extended adjacent the* tops of the posts and the other engaging the hollow body, vertical bolts connecting said bracesv onl each side of the hollow body-and acting asY guides, 1an operating rod extending into the hol# low body, -a cross head carrying ,said rod and having sliding engagement with the vertical bolts connecting the braces, a walking beam operatively.

. 5 connected tothe cross head-and pivotally sup-` head mounted upon the operatingY rod and having. sliding engagement with said bolts, a` walking beam pivotally lconnected to the'cross head at one end, a counterweight connectedto. the

other end of thefwalking beam, vertical guides for said counter-weight, the support for the Walk-v ing.. beam pivoted` at its lower end and at its Y upper end pivoted to the walking beam, said sup-l port oscillating in the plane of the walking beam andpower operated means for' oscillating the Walking beam.

3. A pump mechanism of thevcharacter de' scribed, including a tubular body, a supporting frame including two uprights disposed'on each side of theitubular body, braces rigidly connecting said uprights, vertical bolts passing through said braces on each side of theY tubular bodyand `constituting guides, a.'rod operating within the tubular body, a cross head slidable upon said 1 bolts and operatively connected to the operating rod, sill beams constituting part of said frame, a walking beam, a supporting member pivoted g upon said sill beams for oscillation toward or from the body, a walking beam pivotally supported upon the upper ends of said supporting members and operatively connected at one end to the cross head, vertical members forming part of the frame 'gon each side of the other end of said walking beam from the tubular body, a transverse brace connecting the upper ends of said members, vertical guide rods passing downward through said brace and anchored at their lower ends, a counterweight slidably engaged by said guide rods and having linked connection to the rear end of the walking beam, and power driven operating mechanism mounted upon said frame and operatively connected to the walking beam.

4. A pump mechanism of the character described, including a supporting frame having two uprights, braces rigidly connecting said uprights, laterally spaced vertical bolts passing through said braces and constituting guides, a cross head jslidable upon said bolts and operatively pivoted transverse brace connecting the upper ends of said members, vertical guide rods passing down- Ward through said brace and anchored at their lower ends, a counterweight slidably engaged by Nsaid guide rods and having linked connection to 75-the rear end of the walking beam, power driven operating mechanism mounted uponsaid frame and operatively connected to the walking beam,l

and-.ialubricant .containing tank having its bot-` tom disposedbetween the sill beams andat its forward and extending over the sill beams Vand disposed between said .upright members on each side of the pump body, the sides of the tank being.'

disposed exterior'to` saidsill beams and attached thereto .and rattached at ytheir forward ends to said uprights, and gear supporting beams extending parallel to the sillbeams to which the upper f ends `of the sides ofthe .tank are connected, the

rear wall of the'tank being connected tothe bot tom of thetank and tothe sides of the tank and extending over the sill beams, and operating gear? ing carried bvtheY gear supporting ,beams and enclosed within the tank.

5. In a pumping mechanism, laterally'disposed, longitudinally extending sills having uprights at one end, a pump bodysupported upon said uprights, supporting membersU mounted upon the rst named sillsadjacent said uprights and hav-V ingbearings, a crank shaft and apinion shaft mounted in'said bearings, gears mounted upon said shafts and engaging each other, a walking beam disposed above the shafts and operatively connected at `one end to the pump body, a counter-weight operatively connected tothe other end y of the walking beam, posts integralwith and eX- tendingupward from the sills, guides'icarried by said posts ,and upon which," saidcounter-,wcight V operates,` and an oil having a bottom, front and rearv Walls integral with the sills and having lateral sills attached attheir forward ends tothe uprights and at their rear ends to .the rear end` wall. v

6. In a mechanism of the character described,

a walking beam, a .support to the upper end o1 which the walking beam is pivoted, said support being pivoted at.v its lowerend for movement in the plane of the walking beam, a reciprocatable member pivotally connected to one end of the walking beam, a Weight operatively connected to the other end of the walking beam and counterbalancing the weight of the reciprocatable member, power operated `means for oscillating the walking beam, and vertical, rigid guides `with which the reciprocatable member hasl operative` engagement, said guides causing the reciprocatable member to move in a right line direction.

7. In combination, a walking beam, a vertical support upon which the walking beam is pivoted,v meansv pivotally supporting the lower end of` the support for movement in a direction parallel to Y the length of `the walking beam, a cross head to which one end of the walking beam is pivoted,

rigid vertical guides with which the cross head i has sliding engagement, the guides acting toA the length of the walking beam, a cross head to which one end of the walkingbeam is pivoted, rigid vertical guides with which the cross head has sliding engagement, the guides acting to guide the adjacent end of the walking beam in tol BOSy

a vertical, rectilinear line, rigid vertical guides disposed at the rear end of the walking beam, a.

vto the walking beam at a point between the walking beam support and the cross head.

9. In combination, a walking beam, a support for the. Walking beam pivoted at its upper end thereto, means pivotally supporting the lower end ofthe support for movement in a plane parallel to the length of the walking beam, rigid vertical guidesdisposed at the forward end of the walking beam, rigidy vertical guides disposed at the rear end of the walking beam, rigid connections between the upper ends of said guides, a cross head connected to the forward end of the walking beam and having slidingengagement with the first named guides, a counter-weight having sliding engagement with the second named guides, a rigid link connecting the counter-weight,

i beam support pivotally mounted at its lower end forl movement in the plane ofthe walking beam' and to the upper` end of which the walking beam is fulcrumed intermediate rthe ends of the beam, a counter-weight, a rigid connecting rod pivotally connected to the counter-weight and to the beam adjacent one end thereof, vertical rigid guides for the counter-weight, vertical rigid guides for the opposite end of the walking beam, a rod pivotally connected to this vend of `the walking beam, and means for oscillating thevwalking beam connected to the walking beam between the fulcrumV thereof and the last named rod.

, l1. A pumping mechanism of the character-described includng. a Walking beam, a walking beam support pivotally mounted at its lower end for movement in the plane of the walking beam and to the upper end of which the walking beam 'is fulcrumed intermediate the ends of the beam,

a counter-weight, a rigid connecting rod pivotally connected to the counter-weight and to the beam adjacent one end thereof, Vertical rigid guides for the counter-weight, vertical rigid 'guides for the opposite end of the walking beam, a rod pivot'- i Ycontaining tank within which the gear wheels,

the shafts thereof andthe lower end of the walking beam supports operate, and meansfor sup-Y plying oil to said tank. t

l ARTHUR C. NELSON. 

